Riveting-brace.



. 'PATENTED MAY-.19, 1903. .J, L. PEARSON; RIVBTING BRAOE. APPLICATION PILED DBO. 20, 1 902 10 MODEL.

A TTOR/V-E WITNESSES:

THE "cams PETERS co P UNITED STAT S Patented May 19, 1903.

PATE T OFFICE.

RlVETlNG-BRACE.

SPECIFICATION forming part of Letters Patent No. 728,605, dated May 19, 1903. Application filedDecember 20, 1902. Serial No. 136,014., (No model.)

To all whom, it Wtcty concern.-

Be it known that I, J AOOB LINDLEY PEAR- SON, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York,have invented a newandImproved Riveting-Brace, of which the following is a full, clear, and exact description.

This invention relates to a brace adapted to be placed back of a rivet during the riveting operation, so as to hold the rivet against the blows of the riveting machine or hammer.

The invention is especially adapted for use in riveting work where pneumatic rivetingmachines are used, a notable instance of this use being in the art of ship-building. I

The device comprises two arms, one of which is adapted to engage the rivet and the other to engage a stationary surface. These arms are connected by eccentrics to a rockshaft which is fitted with means for manually turning it, so that by throwing the shaft to a certain position the arms will be projected oppositely from the shaft, and thus the rivet may be held forcibly in place.

The device may be freely moved from one place to another as the work may require.

This specification is an exact description of one example of my invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view showing the invention in use. Figs. 2 and 3 are sectional views showing, respectively, the inactive and active positions of the instrument; and Fig. 4 is a detail section on the 1ine4 4 of Fig. 3.

a indicates a rock-shaft, and b a handle facilitating the manual operation of the shaft.

0 and 61 indicate two eccentrics keyed on the shaft a and set oppositely to each other. Around these eccentrics extend the straps c and d, and to said straps are attached, respectively, the arms 6 and f. The eccentricstraps c and d may be held on the eccentrics in any desired manner. According to the construction here shown I employ annular cheek-plates c and d which are riveted to the straps and lie against the sides of the cocentrics. This construction is not, however, essential, although it makes a strong and durable instrument. Preferably the arm 6 is pointed at its end 6, and the arm fis cupped at its end f, so that the arm e may securely engage the surface against which it bears and so that the armf may hold the head of the rivet snugly in the cup f.

Fig. 1 shows the brace as used against horizontally-disposed work. For example, let it be supposed that the work Q in Fig. 1 is some part of a deck of a vessel and the surface h represents a deck below. The arms f and e are therefore worked between these decksj '1; indicates beams which, if desired, may be temporarily placed between the decks to carry the shaft a as the instrument is moved from one point to another. These beams are not employed, however, when the instrument is at work, it being then guided and steadied by the operator. The instrument may be used with work in any position, as will be apparent, it being only necessary to provide a stationary surface against which the arm e may bear.

Various changes in the form, proportions, and minor details of my invention may be resorted to at will without departing from the spirit and. scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A riveting-brace, comprising a shaft, oppositely-set eccentrics thereon, arms having connection with said eccentrics, one of said arms being formed toengage a rivet, and means for facilitating the turning of the shaft. 2. The combination of a shaft, oppositelyset eccentrics thereon, two arms having connection with the eccentrics, for the purpose specified, and a handle attached to said shaft to permit the manual rotation thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JACOB LINDLEY PEARSON. Witnesses:

JAMES GARDNER, THOMAS M. PEARSON. 

